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Finding the Fourth Proportional to 12,275.92, 16,940.74 and 6,686.92

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Solution

The fourth proportional to 12,275.92, 16,940.74 and 6,686.92 is: 9,227.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.92 : 16,940.74 = 6,686.92 : x
  2. Step 2: Convert to fraction form
    12,275.92/16,940.74 = 6,686.92/x
  3. Step 3: Cross multiply
    12,275.92x = 16,940.74 × 6,686.92
  4. Step 4: Simplify right side
    12,275.92x = 113,281,373.12
  5. Step 5: Solve for x
    x = 113,281,373.12/12,275.92
  6. Step 6: Final answer
    x = 9,227.93

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.